<%= link_to_remote "删除该接单者", :url => { :action => :delete_order, 
											:controller => "/requirement", 
											:username => @user.username,
											:id => @requirement},
											:update => "requirement_#{@requirement.id}" %>
<%= link_to_remote "设为解决方案者", :url => { :action => :choose_solver, 
										   :controller => "/requirement", 
				                           :username => @user.username,
										   :id => @requirement },
 										   :update => "requirement_#{@requirement.id}" %>
